Combined boiler and furnace.



W. J. ELLIS.

COMBINED BOILBB AND PUBNACE. .nlnmki'w FILED 1mv.9 190s.

v Patented Mar. 9, 1909.

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WILLIAM I. ELLIs, o

SAVAGE AND CNL-THIRD TO W, A. SAVAGE, Oi? ANDREWS, Ntlt'il CAROLINA.

CQMBIN'ED IBOILER AND FRNACE.

Specification 'of Letters Patent.

Patented. March 9, 1905).

Application filed November 3, 1908. Seiil No. 461,712.

dreivs, in the county of Cherokee and State g of North Carolina, haveinvented certain new and useful Improvements in a Combined Boiler andFurnace; and I do declare the following to be a full, clear, and exactde scription of the invention, such as will enable others skilled intheart to which it appertains to make and usethe same.

rll'his invention relates to a combined boiler and furnace.

The object of the invention is to improve the construction andarrangement of the boiler, `fire ox, combustion chamber and return ilueswhereby a maximum amount of heat and a perfect combustion may beobtained, thus providing for a great saving of fuel. i' v A furtherobject is to provide an improved means for feeding 'fuel'to the furnaceWhereby this operation isperformed Without endangering the eyes orperson of the fireman.

With these and other objects in View, the invention consists of certain`novel features of construction, combination and arrangef ment of partsas will be described and particularly pointedout in the appended claims.

In the accompanying rau/ings, Figure 1 is a central verticallongitudinal sectional view of my improved boiler, and furnace; Fig. 2is afront elevation ot the saine; Fir. 3

.is a vertical cross section al vieiv through the fire box and front endof the boiler; and Fig. 4 is asimilar vieuv through the boiler and rearportion of the combustion chamber.'

Referring 'more particularly 'to the drawings, l denotes the fire box,which is suitably arranged anrhsupported by brackets, 2, betu'een theusual masonry walls, 3. The tire. box is provided .with a lining; oflire clay slabs, or bricks, '-l. arranged an ash pit, 5. The upperportion of the front end of the hre box is closed by a suitable Wall orhead, 6, while the lower portion thereof is closed by a large door, 7preferably hinged at its upper edge and adapted to swing upwardly, asshown. In the door, 7, is arranged a smaller door, 8, for strikingrpurposes. Betr-een the 'fire box and the ash pit is arranged a grate, 9,the bars of which preferably run longitudinally from one end of the boxto the other and are supported at Below the fire box is their oppositeends uponcuiwod grate supportingbars, ,10. y The ash pit, 5, 1s providedi at its front end with suitable doors, l2. Tue

are preferably formed of sheet metal which is strengthened and braced byangie-iron bars, le, to which are bolted angleiron supportingr bars, 15,around which thev masonry supportings walls, 3, are built.

The boiler, i6, may be of any suitable shape and is here shown ashavingl an ovalshaped forward end, which is arranged in the fire box andto taper rearwardly to a rear cylindrical portion. vrl`he rear end ofthe boiler is closed by a rear head or iluesheet, 17, while the frontend of the 'boiler is closed by a head or crown sheet, 18. On the rearend vof the boiler .is arranged a cylindrical return smoke box, 1S),said. smoke box and rear end of the boiler being` preferably supportedby a Wall, 20. The forward end of the boiler which projects into thefire box extends through a rear fire box Wall, 2i, and on the upperportion of itsifront end is arranged a smoke box, '22, to .which thestaclf; is eonnected. The outer or front end of the Y snn'ike box ispreferably closed by two doors, 23, whereby access to the front end ofthe boiler is obtained. On the upper side of the tire box end of theboiler is arranged a steam dome, 24. The top of the fire box is closedby a suitable top plate, 25, through. which the steam dome projects andin which, adjacent to each side of the lire box, are arranged fuelsupplying doors, 26, whereby fuel is introduced into the lire box fromthe top of the saine. This arrangement for feeding the iii-e boxobviates the danger of injury to the eyes or person of the iireirian, asfrequently occurs from the intense heat where the firing doors arearranged on a line with the hre box.

Arranged in the boiler near its lower side and extending through theentire length of i,the saine, is a' cylindrical combustion chainber, 27,the inner walls of which are linedwith suitable fire clay slabs orbricks, 28. The front end of the combustion chaniberopens boiler, whilethe rear end opens through the rear flue sheet, 17, and into the returnsmoke box, IQ, The front end of the combustion chamber is open at. itslower side in the lire box and above the grate 9, so that the gases andproducts 'f combustion will enter said ash pit and the outer shell, i3,of the fire box.

through the front end or crown sheet of the chamber and be consumedtherein, the smoke l assingirointhe rear end of the chamber lnto thereturn smoke box, from which it is conducted through a series of returniu'es, 2 9, running the entire length oi the boiler and into the frontsmoke box, 22, from which it,

-is discharged through the stack connected thereto.

B 'arranging the combustion chamber near the ower portion ofthe boiler,a space is prov'vided above the chamber `to accommodate the return lues'which are arranged in the upper portion of the boiler, as shown. Thecombustion chamber is su )ported and held in position throughout itslength by a series ofvm'dially projecting tie or supporting bolts,

3Q-Which are connected at their inner ends to the combustion chamber andat their outer ends to the outer wall of the boiler, as shown.

The boiler is provided with the necessary' manholes and hand-holes,whereby access may be had to the interior of the same. If desired, air.supply passages, 31, may be formed in the large door which closes theforward end of the fire box, said passages being opened and closed bysuitably pivoted cover p ates, 32, whereby air may be supplied to thesmokebox, 22, access may be had to the return ues, 29, for the purposeof cleaning or renewing the same.

While my unproved boiler and furnace are .nesses the rire box. Byproviding the doors,23, in

here shown and described in the form. of a a rire box substantiallyU-shape in cross section, an inverted U-shaped boiler suspended in saidtire box and having a cylindrical lateral extension, said boiler beingclosed at both ends, smoke boxes arranged-at the iront and rear of saidboiler, a cylindrical flue extend-- ing the full length of said boilerand connected at its opposite ends with said fire box, and said rearsmoke box respectively, return flues extending through said boiler andconnecting said smoke boxes, doors arnanged at the top` of the fire box,and a fhie connecting with the front of same box.V l

In testimony whereof I have hereunto set my hand in presence of twosubscribing wit- TNILLIAlVI J. ELLIS.

Witnesses: A l

C. E HUNT, E. EDMoNsToN, Jr.

